libbackup/ft_strstr.c at master · Wouterbeets/libbackup · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strstr.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: wbeets <wbeets@student.42.fr>              +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2015/03/20 11:57:23 by wbeets            #+#    #+#             */
/*   Updated: 2015/03/20 11:57:23 by wbeets           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strstr(const char *s1, const char *s2)
{
	int	i;
	int	j;

	i = 0;
	if (!*s2)
		return ((char *)s1);
	while (s1[i])
	{
		j = 0;
		while (s1[i + j] == s2[j] && s1[i + j] && s2[j])
			j++;
		if (!s2[j])
			return ((char *)&s1[i]);
		i++;
	}
	return (NULL);
}